Siemens has received an order to improve the performance of the Vietnamese power transmission grid.

The work is in line with Vietnam’s drive to develop a more reliable national power supply.

Siemens‘ client is the state-run energy company, Electricity of Vietnam National Load Dispatch Centre (EVN NLDC) and the company will supply and install products and systems for detecting and evaluating failure situations in the grid, for ensuring grid quality and for detecting and monitoring dynamic grid states.

The equipment will be installed in substations distributed throughout the country and in the grid control centers, where it will help increase the grid’s failure tolerance, improve its transmission capacity and optimize the expansion of new primary plants.
Siprotec fault recorders
The goal is to make better use of the existing grid infrastructure and to be able to connect additional loads as well as prevent outages that could result from overloading. The substations and control centers are expected to be equipped with the new technology and go into operation by mid-2018.

Fault recorders from the Siprotec 5 7KE85 series, combined with the Sicam PQS evaluation software, will be used in 73 Vietnamese substations, and the Siguard PDP wide-area monitoring system will be employed in three regional and one national grid control center. These fault recorders work with an integrated function for measuring synchrophasors to monitor grid dynamics and measure grid quality.

The Siguard PDP (Phasor Data Processor) wide-area monitoring system in the one national and three regional control centers will also help ensure that the transmission grid in Vietnam operates reliably. It uses synchrophasors in real time, making it easier to quickly assess the current condition of the grid. For example, power swings and fluctuations are immediately displayed to help the control center personnel determine the cause of the problem and immediately take corrective action.